Emeralds and RubiesLetter Equations are well known phrases or facts where the key words have been replaced with the first letter of that word. These are often in the form of an equation, which contain a number, an = sign and the rest of the obscured phrase or fact.
The three equations below are related to each other...
1) 4= W in O
2) 2, N and S are good
3) 2, E and W are wicked
Answer1) 4= Witches in Oz
2) 2, North and South are good
3) 2, East and West are wicked
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